<!--
 * @Author: Xujianchen
 * @Date: 2024-06-28 09:34:15
 * @LastEditors: xujianchen
 * @LastEditTime: 2024-09-14 17:00:36
 * @Description: 充电动画
-->
<template>
  <div
    v-if="isSupported"
    class="charge"
  >
    <div class="charge-container">
      <div class="charge-number">{{ (level * 100).toFixed(0) }}%</div>
      <div class="charge-contrast">
        <div class="charge-circle"></div>
        <ul class="charge-bubbles">
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
          <li></li>
        </ul>
      </div>
    </div>
    <div class="charging">
      <div class="status">{{ batteryStatus }}</div>
      <template v-if="!isMobile">
        <div v-show="Number.isFinite(dischargingTime) && dischargingTime !== 0">
          剩余可使用时间：{{ calcDischargingTime }}
        </div>
        <span v-show="Number.isFinite(chargingTime) && chargingTime !== 0">
          距离电池充满需要：{{ calcDischargingTime }}
        </span>
      </template>
    </div>
  </div>
  <div
    v-else
    class="not-support"
  >当前浏览器不支持Battery Status API</div>
</template>

<script setup>
import { useBattery } from '@vueuse/core'

defineProps({ isMobile: Boolean })

const { charging, chargingTime, dischargingTime, level, isSupported } = useBattery()

// 电池状态
const batteryStatus = computed(() => {
  const chargingVal = charging.value
  if (chargingVal && level.value * 100 >= 100) {
    return '已充满'
  } else if (chargingVal) {
    return '充电中'
  } else {
    return '已断开电源'
  }
})

// 计算电池剩余可用时间
const calcDischargingTime = computed(() => {
  const disTime = dischargingTime.value
  const hour = disTime / 3600
  const minute = (disTime / 60) % 60
  return `${~~hour}小时${~~minute}分钟`
})
</script>

<style lang="scss" scoped>
.charge {

  // 充电动画部分
  &-container {
    position: relative;
    width: 300px;
    height: 400px;
    margin: auto;
  }

  &-number {
    position: absolute;
    width: 300px;
    top: 27%;
    text-align: center;
    font-size: 32px;
    z-index: 10;
    color: var(--el-color-white);
  }

  &-contrast {
    filter: contrast(10) hue-rotate(0);
    width: 300px;
    height: 400px;
    overflow: hidden;
    animation: hueRotate 10s infinite linear;
  }

  &-circle {
    position: relative;
    width: 300px;
    height: 300px;
    box-sizing: border-box;

    &::before {
      content: '';
      position: absolute;
      width: 176px;
      height: 176px;
      top: 40%;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      background-color: #000;
      z-index: 10;
    }

    &::after {
      content: '';
      position: absolute;
      top: 40%;
      left: 50%;
      transform: translate(-50%, -50%) rotate(0);
      width: 200px;
      height: 200px;
      background-color: #00ff6f;
      border-radius: 42% 38% 62% 49% / 45%;
      animation: rotate 10s infinite linear;
    }
  }

  &-bubbles {
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 100px;
    height: 40px;
    transform: translate(-50%, 0);
    border-radius: 100px 100px 0 0;
    background-color: #00ff6f;

    li {
      position: absolute;
      border-radius: 50%;
      background-color: #00ff6f;
    }
  }

  // 充电中
  .charging {
    font-size: $space-medium-s;
    text-align: center;

    .status {
      margin-top: $space-small;
    }
  }
}

.not-support {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--el-color-white);
  font-size: 20px;
}

@for $i from 0 through 15 {
  li:nth-child(#{$i}) {
    $width: 15 + random(15) + px;
    left: 15 + random(70) + px;
    top: 50%;
    transform: translate(-50%, -50%);
    width: $width;
    height: $width;
    animation: moveToTop #{random(6) + 3}s ease-in-out -#{calc(random(5000) / 1000)}s infinite;
  }
}

@keyframes rotate {
  50% {
    border-radius: 45% / 42% 38% 58% 49%;
  }

  100% {
    transform: translate(-50%, -50%) rotate(720deg);
  }
}

@keyframes moveToTop {
  90% {
    opacity: 1;
  }

  100% {
    opacity: 0.1;
    transform: translate(-50%, -180px);
  }
}

@keyframes hueRotate {
  100% {
    filter: contrast(15) hue-rotate(360deg);
  }
}
</style>
